Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:57:58 2013

Optimize a model with 34279 rows, 3481 columns and 104430 nonzeros
Presolve removed 2594 rows and 1760 columns
Presolve time: 0.22s
Presolved: 31685 rows, 1721 columns, 96455 nonzeros
Variable types: 25 continuous, 1696 integer (1696 binary)
Found heuristic solution: objective 62609.000000

Root relaxation: objective 4.681011e+04, 11434 iterations, 0.85 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0 46810.1128    0   13 62609.0000 46810.1128  25.2%     -    1s
H    0     0                    46828.000000 46810.1128  0.04%     -    1s
H    0     0                    46825.000000 46810.1128  0.03%     -    1s
H    0     0                    46821.000000 46810.1128  0.02%     -    1s
     0     0 46812.5505    0   32 46821.0000 46812.5505  0.02%     -    1s
     0     0 46812.5505    0   12 46821.0000 46812.5505  0.02%     -    1s
     0     0 46813.4159    0   29 46821.0000 46813.4159  0.02%     -    1s
H    0     0                    46820.000000 46813.4159  0.01%     -    1s
     0     0 46813.6812    0   37 46820.0000 46813.6812  0.01%     -    1s
     0     1 46813.9733    0   37 46820.0000 46813.9733  0.01%     -    1s

Cutting planes:
  Gomory: 8
  MIR: 19
  Zero half: 9

Explored 12 nodes (12797 simplex iterations) in 1.69 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.682000000000e+04, best bound 4.681600000000e+04, gap 0.0085%